High Critical-Current Superconductor-InAs Nanowire-Superconductor Junctions
Journal article, 2012
We report on the fabrication of InAs nanowires coupled to superconducting leads with high critical current and widely tunable conductance. We implemented a double lift off nanofabrication Method to get very short nanowire devices with Ohmic contacts. We observe very high critical. currents of up to 800 nA in a wire with a diameter of 80 nm. The current- voltage characteristics of longer and suspended nanowires display,either. Coulomb blockade or supercurrent depending on a local gate voltage, combining different regimes of transport in a single device.
supercurrent
josephson-junctions
InAs nanowires
supercurrent
Coulomb blockade
devices
Andreep reflection
Author
Simon Abay
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
H. Nilsson
Lunds Universitet
F. Wu
Chalmers University of Technology
H. Q. Xu
Lunds Universitet
Peking University
Christopher Wilson
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
Per Delsing
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
Nano Letters
1530-6984 (ISSN) 1530-6992 (eISSN)
Vol. 12 11 5622-5625Subject Categories (SSIF 2011)
Chemical Sciences
DOI
10.1021/nl302740f